When I set my user language to french I have several problems with the backend.
For example I can't save any stylesheets or scripts.

I discovered that the problem come from literals that contains single quotes.

An example editing Sylesheets: /umbraco/settings/stylesheet/editStylesheet.aspx

$(document).ready(function () {
                var editor = new Umbraco.Editors.EditStyleSheet({
                    nameTxtBox: $('#body_NameTxt'),
                    originalFileName: 'ddsmoothmenu',
                    cssId: '1083',
                    saveButton: $("#body_save"),
                    editorSourceElement: $('#body_editorSource'), 
                    text: {
                        cssErrorHeader: 'Impossible d'enregistrer la feuille de style',
                        cssSavedHeader: 'La feuille de style a été enregistrée',
                        cssSavedText: 'La feuille de style a été enregistrée sans erreurs.',
                        cssErrorText: 'Please make sure that you have permissions set correctly',
                    }
                });
                editor.init();
                
                //bind save shortcut
                UmbClientMgr.appActions().bindSaveShortCut();
            });

How can I open an issue for this problem?

Thanks